//import java.util.concurrent.Callable;
//
//public class CallableTest implements Callable<String> {
//    @Override
//    public String call() throws Exception {
//        return "我进来了";
//    }
//
//    public static void main(String[] args) {
//        CallableTest callableTest = new CallableTest();
//        new Thread(callableTest).start();
//    }
//}
